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Home My WebLink AboutCorrespondenceDave Argo From: Dave Argo Sent: Thursday, February 27, 2020 10:56 AM To: Jeff Johnson Cc: cardenas-71 @icloud.com; mike@onedesignresource.com Subject: Juan Cardenas - Sun Meadow Estates, Lot 29 Jeff: I am currently reviewing plans for a new residence to be located in Sun Meadow Estates (Lot 29). We have found a discrepancy between the soils report provided with this building permit application (Kumar & Associates — Project No. 19-7-258 — dated May 17, 2019) and the soils report as referenced on the Structural Engineer's plans (Kumar — Project No. 17-7-212 — dated April 29, 2019). Not only does the basic allowable bearing pressure differ between the soils report & Engineer's specifications (1,500 vs. 2,000 PSF) but there are other discrepancies as well. For example, the soils report we have calls out for a minimum of 3- feet of structural backfill below any slabs on grade — and this is not reflected in the Engineer's drawings. We assume that this would apply to the basement slab and garage slab areas (?) Can you please contact the Engineer so that you can provide us with clarification with regard to this discrepancy. If we have been provided with the incorrect soils report, please submit a copy of the correct report via email for our review & files. If the Engineer needs to revise any drawings/details, please follow-up with amended plans to our office. Thanks for your assistance in this matter. Dave Argo Plans Examiner C_ Garfield County Community Development Department 108 8th Street, Suite 401 Glenwood Springs, CO 81601 Tel: 970-945-8212 Ext. 1610 Email: dargo@garfield-county.com Web: garfield-county.com 1 Dave Argo From: Dave Argo Sent: Thursday, February 27, 2020 11:28 AM To: Michael S. Villella, P.E.; 'Jeff Johnson' Subject: RE: Juan Cardenas - Sun Meadow Estates, Lot 29 Mike: Thanks for your prompt reply to my email. If you can make clouded edits to your Structural General Notes/Specs reflecting the corrected soils report references (including proper allowable PSF value) and then simply email an 8 %' x 11" sized PDF with this updated information back to me for our project file that will work best for our office. Please let me know if you have any questions and I will look forward to receiving this updated info from you so that we can finalize our plan review & issue a building permit. Dave Argo Plans Examiner Garfield County Community Development Department 108 8th Street, Suite 401 Glenwood Springs, CO 81601 Tel: 970-945-8212 Ext. 1610 Email: dargo@garfield-county.com Web: garfield-county.com From: Michael S. Villella, P.E. <mike@onedesignresource.com> Sent: Thursday, February 27, 2020 11:20 AM To: Dave Argo <dargo@garfield-county.com>; 'Jeff Johnson' <jjarch@rof.net> Cc: cardenas-71@icloud.com Subject: RE: [External] Juan Cardenas - Sun Meadow Estates, Lot 29 Thank you Dave, See responses below in blue: Kind Regards, Mike Villella one design 1 1 0 u 1 C 1 MICHAEL S. VILLELLA, PE I Owner/Engineer p: 970.306.7638 e: mikeCJonedesienresource.com PO Box 2121- Edwards, CO 81632 COO The company accepts no liability for the content of this email, or for the consequences of any actions taken on the basis of the information provided, unless that information is subsequently confirmed in writing If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited 1 From: Dave Argo <dargo@garfield-county.com> Sent: Thursday, February 27, 2020 10:56 AM To: Jeff Johnson <jjarch@rof.net> Cc: cardenas-71@icioud.corn; niike@onedesignresource.wrn Subject: Juan Cardenas - Sun Meadow Estates, Lot 29 Jeff: I am currently reviewing plans for a new residence to be located in Sun Meadow Estates (Lot 29). We have found a discrepancy between the soils report provided with this building permit application (Kumar & Associates — Project No. 19-7-258 — dated May 17, 2019) and the soils report as referenced on the Structural Engineer's plans (Kumar — Project No. 17-7-212 — dated April 29, 2019). Thank you for your review. I agree that the structural plans mis-reference the soils report. No. 19-7-258 — dated May 17, 2019 is the correct report. The design of the structure was completed according to the correct information. This is a typo in the general notes, foundation section only. I do not otherwise specifically reference over excavation requirements as this is the responsibility of the soils engineer. Please follow all recommendations listed in report No. 19- 7-258 — dated May 17, 2019. If you require more than this clarification, I will be happy to re -submit this page with these few sentences/values adjusted. Not only does the basic allowable bearing pressure differ between the soils report & Engineer's specifications (1,500 vs. 2,000 PSF) but there are other discrepancies as well. For example, the soils report we have calls out for a minimum of 3- feet of structural backfill below any slabs on grade — and this is not reflected in the Engineer's drawings. We assume that this would apply to the basement slab and garage slab areas (?) Can you please contact the Engineer so that you can provide us with clarification with regard to this discrepancy. If we have been provided with the incorrect soils report, please submit a copy of the correct report via email for our review & files. If the Engineer needs to revise any drawings/details, please follow-up with amended plans to our office. Thanks for your assistance in this matter. Dave Argo Plans Examiner Garfield County Community Development Department 108 8th Street, Suite 401 Glenwood Springs, CO 81601 Tel: 970-945-8212 Ext. 1610 Email: dargo@garfield-county.com Web: garfield-county.com 2 Design Criteria: Code Edition: RECEIVED GARFIELD COUNTY COMMUNITY DEVELOPMENT 2015 IBC/IRC Dead Loads: Live Loads: Roof 25 psf (5 psf Solar Collateral) Roof Floor 15 psf Floor Lateral Loads: Basic Wind Speed: Exposure: Risk Category: Seismic Design Class: 115 mph (3 second gust) C I I Exempt (ASCE 11.1.2.1) 40 psf 40 psf Foundations: A. Foundations have been designed based upon values found in report #19-7-258 by Kumar and Associates, Inc. dated 05/17/2019. B. Continuous concrete footings and foundations are based upon a maximum, non -expansive, allowable bearing pressure of 2000 psf (dead load plus full live load), an active lateral pressure of 45 pcf, an at rest lateral pressure of 55 pcf and a passive lateral pressure of 350 pcf. Foundation construction may not proceed without verification of these values. If discrepancies exist in actual site conditions notify FOR for review. C. All footings shall bear on firm, undisturbed natural soil or properly compacted structural fill in accordance with the recommendations of the geotechnical engineer including proof -rolling and over -excavation as required. All footings are to bear a minimum of 36" below exterior grade. Center all footings under walls, columns or grid lines unless otherwise noted on plans. D. Avoid excessive wetting or drying of the excavations, keeping the excavation reasonably free from water during placement of concrete. Provide continuous perimeter drains around the base of foundation and retaining walls. Refer to geotechnical report for specific under -drain system requirements. E. Backfill shall be compacted to meet a 95% minimum standard Proctor density per ASTM D-1557 unless otherwise noted in the geotechnical report. Backfill shall be placed in 12" maximum vertical lifts or as detailed in the soils report and shall be free of deleterious material and compacted in a manner that does not damage the foundation, waterproofing or damp -proofing material. If soft spots are encountered contractor shall remove material and re -compact w/ approved material (RE: soils report) Finished grading shall drain away from the foundation wall at a minimum of 5%. F. Do not backfill against lower level walls or walls in retaining until all supporting elements are in place and properly anchored or adequate shoring is installed. Concrete slabs shall be properly cured. G. Contractor shall retain a licensed geotechnical engineer to verify soils conditions during excavation. Verify any discrepancies from the original values in writing to structural engineer for re-evaluation of the foundation design. Reinforced Concrete. A. All structural concrete had been designed in accordance with ACI 318-14. All structural c - c• struction work shall conform to ACI 301-10 (or latest edition) unless noted otherwise. B. Cast in place concrete shall be made with type I/II sulfate -resistant cement to maintain the following requirements, admixtures containing chloride salts shall not be used. one design engineering consulting Wiwi tp4, awurn. TITLE SOILS REPORT UPDATE a PROJECT CARDENAS RESIDENCE LOT 29 - SUN MEADOW ESTATES TOWN OF RIFLE, CO JOB NO. 19013 02/27/2020 REVISED GENERAL NOTES FOR SOILS REPORT INFO MSV MSV 09/05/2019 ISSUED FOR PERMIT MSV M5V NO. DATE DESCRIPTION BY CNK SCALE 1 o .5 1 SHEET NO. REV 1.1 STRUCTURAL ENGINEERING - CIVIL ENGINEERING -ARCHITECTURAL DRAFTING - 3D MODELING